runtime_capabilities/fidl/
data_router.rs

1// Copyright 2024 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::fidl::router;
6use crate::{ConversionError, Data, Router, WeakInstanceToken};
7use fidl::AsHandleRef;
8use fidl_fuchsia_component_sandbox as fsandbox;
9use fidl_fuchsia_io as fio;
10use futures::TryStreamExt;
11use std::sync::Arc;
12use vfs::directory::entry::DirectoryEntry;
13use vfs::execution_scope::ExecutionScope;
14
15impl crate::RemotableCapability for Router<Data> {
16    fn try_into_directory_entry(
17        self,
18        scope: ExecutionScope,
19        token: WeakInstanceToken,
20    ) -> Result<Arc<dyn DirectoryEntry>, ConversionError> {
21        Ok(self.into_directory_entry(fio::DirentType::Service, scope, token))
22    }
23}
24
25impl crate::fidl::IntoFsandboxCapability for Router<Data> {
26    fn into_fsandbox_capability(self, token: WeakInstanceToken) -> fsandbox::Capability {
27        let (client_end, sender_stream) =
28            fidl::endpoints::create_request_stream::<fsandbox::DataRouterMarker>();
29        self.serve_and_register(sender_stream, client_end.as_handle_ref().koid().unwrap(), token);
30        fsandbox::Capability::DataRouter(client_end)
31    }
32}
33
34impl Router<Data> {
35    async fn serve_router(
36        self,
37        mut stream: fsandbox::DataRouterRequestStream,
38        token: WeakInstanceToken,
39    ) -> Result<(), fidl::Error> {
40        while let Ok(Some(request)) = stream.try_next().await {
41            match request {
42                fsandbox::DataRouterRequest::Route { payload, responder } => {
43                    let resp = match router::route_from_fidl(&self, payload, token.clone()).await {
44                        Ok(Some(c)) => Ok(fsandbox::DataRouterRouteResponse::Data(c.into())),
45                        Ok(None) => {
46                            Ok(fsandbox::DataRouterRouteResponse::Unavailable(fsandbox::Unit {}))
47                        }
48                        Err(e) => Err(e),
49                    };
50                    responder.send(resp)?;
51                }
52                fsandbox::DataRouterRequest::_UnknownMethod { ordinal, .. } => {
53                    log::warn!(ordinal:%; "Received unknown DataRouter request");
54                }
55            }
56        }
57        Ok(())
58    }
59
60    /// Serves the `fuchsia.sandbox.Router` protocol and moves ourself into the registry.
61    pub fn serve_and_register(
62        self,
63        stream: fsandbox::DataRouterRequestStream,
64        koid: zx::Koid,
65        token: WeakInstanceToken,
66    ) {
67        let router = self.clone();
68
69        // Move this capability into the registry.
70        crate::fidl::registry::insert(self.into(), koid, async move {
71            router.serve_router(stream, token).await.expect("failed to serve Router");
72        });
73    }
74}
runtime_capabilities/fidl/data_router.rs

runtime_capabilities/fidl/
data_router.rs
